| Value | Category | Cases | |
|---|---|---|---|
| 1 | At least once a month | 5 |
0.3%
|
| 2 | At least once a week | 181 |
10.8%
|
| 3 | Don't know | 1 |
0.1%
|
| 4 | Every time we use them | 1053 |
62.6%
|
| 5 | Once a day | 302 |
17.9%
|
| 6 | Twice a day | 141 |
8.4%
|